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| author | Florian Westphal <fw@strlen.de> | 2023-04-21 19:02:55 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-04-21 11:34:14 -0700 |
| commit | fd9c663b9ad67dedfc9a3fd3429ddd3e83782b4d (patch) | |
| tree | 6cf7b3fdb57b0152b9f84cfdb282b6c039522a5d /include/linux/bpf_types.h | |
| parent | 84601d6ee68ae820dec97450934797046d62db4b (diff) | |
| download | linux-fd9c663b9ad67dedfc9a3fd3429ddd3e83782b4d.tar.gz linux-fd9c663b9ad67dedfc9a3fd3429ddd3e83782b4d.tar.bz2 linux-fd9c663b9ad67dedfc9a3fd3429ddd3e83782b4d.zip | |
bpf: minimal support for programs hooked into netfilter framework
This adds minimal support for BPF_PROG_TYPE_NETFILTER bpf programs
that will be invoked via the NF_HOOK() points in the ip stack.
Invocation incurs an indirect call. This is not a necessity: Its
possible to add 'DEFINE_BPF_DISPATCHER(nf_progs)' and handle the
program invocation with the same method already done for xdp progs.
This isn't done here to keep the size of this chunk down.
Verifier restricts verdicts to either DROP or ACCEPT.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20230421170300.24115-3-fw@strlen.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/bpf_types.h')
| -rw-r--r-- | include/linux/bpf_types.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index d4ee3ccd3753..39a999abb0ce 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -79,6 +79,10 @@ BPF_PROG_TYPE(BPF_PROG_TYPE_LSM, lsm, #endif BPF_PROG_TYPE(BPF_PROG_TYPE_SYSCALL, bpf_syscall, void *, void *) +#ifdef CONFIG_NETFILTER +BPF_PROG_TYPE(BPF_PROG_TYPE_NETFILTER, netfilter, + struct bpf_nf_ctx, struct bpf_nf_ctx) +#endif BPF_MAP_TYPE(BPF_MAP_TYPE_ARRAY, array_map_ops) BPF_MAP_TYPE(BPF_MAP_TYPE_PERCPU_ARRAY, percpu_array_map_ops) |